1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7753c5d873344100eea587aacd5d88bd6e35c30da999c4edde1d4a26e6df9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a0df93f-fca2-4d21-9e4f-81ae4a569551.json and https://artists.proofprofile.net/proofs/artist/1a0df93f-fca2-4d21-9e4f-81ae4a569551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97814da0b6782ca996e0f25db6a52d0f11059d0ac3ec8a136d03b189ae2cc99f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2321950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504f4791a7dcdeb865dbb472c3df592e1aec69580d945894518039afaef8457. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52233960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b279cec77f02eeefd4f6e456cb68bd4ec2a19d8fbe8aef11b1bd254ae243a19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62310316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bacc615a1c1efbaf5af2f271f7b437521acd88a35ba0a5a92fd6410b1fd6d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAII2419013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa327b4179d223c501e5cb2913f44549ed139f980ac74202ba509359bfa02c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2402678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb6f8a3628a0bca6e02160818614d11f875b33df9e44581282065514ddc83e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2402684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c24d7cd9966ddb4e0ff1b74d2e3f90619fae69b2c6a67e024f32f861bd2edc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2402686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e989d56e583f0a9d4003e0b71ae036ca62ebf656de4f34927c12061d417a167. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2402689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9957d42f6ea2dab9796f805208e86b3a40e524433f1d4c1536dfe7ab114eb68e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2402691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dd0bf264bbe656ff2359c461a5913748a87ba836ee2f64be457b8c3ab0e1fe. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2402698.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fcae1b14683102b8ad114ebd4944c1a07387260e3fcd477603dc0de815ade8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2402694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862f90da9ea6c06a5bfd26dadb26194113df967c624f5a36b027cbd4ab6fd64. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62494176.
Te Recuerdo / Te Quiero Ver (OG Season, Vol. 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb9ce5117045adff7ac032731bdafdd3fb9265ce85b3598252597fd6912b660. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWV32357666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f460eb950fdfc90bec0adbf18895e4181d963a1ccdb668fea20e505f9b71b5f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWV32357676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755677f47a7d976d0e8cb7c4118e31b45a29bdafd7526ffd7c7389c9e8733823. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2344288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555e0461e5655869e5f1dc7313b36bf4d15a6a5922450bce3ea571e3582f81e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTV32368721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff7d32089debfbb98e33b912d3e3bfb55aa47dafd2833ce83c1e576b8b004b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTV32343067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd4ca11ae8e490814d0a045f644355252cc6561ae7b3f0374f8f605263c9ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2320702.
Minnie & Mickey / Tu Ganster (OG Season, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ee76d0696508f456f185a05b36b8edebd71eea1554ea204e424a11a3c4eb5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2352848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd36c7db3ada53e43c96a677d796d4734639b48eeb872c714d487fdb59abc900. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2331885.
Black and White (Lonely Spanish Version)
Black and White - Lonely Spanish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af213e0ec562e5db2e2d3a8085962020558fcb2487415ee15c4e1fe1f65aeb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2206665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964db5582c9f6c52eaddd7d8c257b47f71fbbde4547b07c99a9785f0821c062. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDD2563558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2563188441d51e63d3ce6e53fea83e09312bdda9dd54b198132b8e9ab8d5675. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2596777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ae043cf85905958c59be8a5eb78ee7c3d63b35c52599c1b6422c802c5d2da5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2554963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7ebd62cea7dcc015979e12f7257a91640c3a46b4f5bd65ca8381df54bb8a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWV32569439.